I have an existing version of Process tasks that updates certain set of ac!param

I have an existing version of Process tasks that updates certain set of ac!parameters. when I try to add a new ac! to this node and update it my existing in-flight instances break with an exception "Could not find variable ac!XXXX".

I tried using a some conditions so that only new process instances try to load this component (Text field) and update it and existing in-flights don't load this, no matter whatever i configure in the rules whether it loads the component or not it still verifies for the ac!parameter to be available and thus in-flights fail.

what is the best way to update the ac! in existing nodes as in this case?

OriginalPostID-171192

OriginalPostID-171192